All Pondmaster pumps will usually note on the label the following information on the label; this information does not specify the pump model as all models will have the same numbers or similar:

E160713Listed 8C99

FAQ:

Question: Will the impeller fix my pump?

Answer: This depends on what signs your pump is displaying. Usually the pump will be rattling or vibrating with no flow
or greatly reduced flow rate. You should unplug the pump and with dry hands open the pump cover by removing the screws on the front. Then pull out the
impeller assembly. There should be some magnetic pull and if the impeller assembly comes out in multiple pieces or if a fan blade(s) are sheared
or broken off or if the shaft is broken that should be a sign to change the impeller. Even if the there are no signs of damage, we recommend you do a
pump test: Plug the pump in with the impeller assembly removed and place the impeller near the pump; it should shake which shows you that the pump is giving
off magnetic pull. Promptly unplug the pump and an impeller assembly will probably fix your situation. If you don't get any magnetic shake from the pump
than the pump is most likely defective and you should replace the entire pump as they cannot be repaired.